Problem Solving (Question 6: 3 points, Questions 7 to 9: 3 x 4 points = 12 points) Solve. Show your work.
6. The figure below is a net of a solid. Find the volume of the solid.
3 in.
K
1
0
18 in.
ke
22 in.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?